Its former buildings on Vesterbrogade, one facing the street and two in the courtyard on the rear, were listed in 1972; all three date from the second half of the 19th century.

It was then located on the other side of Vesterbrogade, approximately where Oehnschlægergade runs today.

Blau would later also opene Gammeltorv Pharmacy, next to the city hall, on the corner of Nytorv and Frederiksborggade.

It was later expanded with a laboratory building to the rear by Peter Christian Bønecke in 1884.

[3] The ground floor of the building facing the street was converted into a Halifax burger restaurant in 2014–15.